Epson Stylus Pro 4450 - Page 182

EPSON Stylus Pro 4400/4450/4800/4880/4880C Revision C
Troubleshooting Troubleshooting Based on Panel Messages 182
SERVICE REQ. 0001000A
 Error meaning:
CR home position sensor error
 Explanation
During initial operation at power on or during printing operation, there may
be a case where the home position can not be detected at the home
position detection timing or within a specified period of time. In such a
case, this message is displayed and the printer stops operating.
 Points to be checked
1. Check if the CR_HP Sensor is free from adhesion of any foreign
matters.
2. Execute CR_HP Sensor checking by the "1.4.6.1 Self Testing Menu
(SELF TESTING)" (p.91) in "Maintenance Mode 2".
 Remedy
1. Check for dirt, paper dust or damage to the CR_HP Sensor.
2. Replace the CR_HP Sensor (p.276)
3.
Replace the C593 MAIN Board (p.226)
SERVICE REQ. 0001000C
 Error meaning:
PG phase sensor error
 Explanation
During initial operation at power on or during platen gap fluctuation
(change) operation after paper setting, there may be a case where the PG
home position can not be detected. In such a case, this message is
displayed and the printer stops operating.
 Cause of trouble
 Disconnected connector for the PG Phase Sensor.
 Disconnected connector for the PG Motor.
 Broken wire for the PG Motor.
 Defective PG Phase Sensor.
 Defective PG Motor.
 Damage to wheel linkage of PG drive gears
 Power supply fuse for PG/PO Motor driver is broken on the MAIN
Board.
 Points to be checked
1. Check that the PG Phase Sensor and the PG drive gears are free from
obstruction by adhesion of foreign matters or soiling.
2. Measure the resistance value of the PG Motor. (7.0 ± 10% [Ω])
If the PG Motor is found in short mode, replace the BOARD ASSY.,
MAIN at the same time.
3. All the harness must be connected properly and free from short circuit
or broken wire.
4. There should be no damage to wheel linkage such as between PG
Motor pinion gear and PG drive gears.
 Remedy
1. Connect PG Phase Sensor or PG Motor connector correctly.
2. Replace the PG Phase Sensor (p.278)
3. Replace the Motor Assy., PG (p.274)
4.
Replace the C593 MAIN Board (p.226)
C A U T I O N
If the above steps do not result in recovery, this message
will be displayed due to malfunctioning CR system (CR
Encoder Sensor/CR Motor, etc.), so check by widening the
range of investigation.